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. 2021 Apr 22;8:639453. doi: 10.3389/fmed.2021.639453

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Copyright © 2021 Zheng, Yao, Guo, Cui, Miao, Dong, Wang and Yang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Kaplan–Meier survival curves by NT-proBNP in different HF stages. (A) stands for patients with stage A HF. (B) stands for patients with stage B HF. (C) stands for patients with stage C/D HF. Events are defined by 1-year MACE. The NT-proBNP cut-off values between high and low are 121.9 pg/ml for stage A, 280.45 pg/ml for stage B, and 11,111.5 pg/ml for stage C/D.